Meta Coding & Algorithms Interview Questions
Preparing for Meta Coding & Algorithms interview questions requires focusing on algorithmic problem solving, writing production-minded code, and communicating tradeoffs under time

"I got asked a hardcore MCM DP question and I saw it on PracHub as well. Solved that question in 5 minutes. Without PracHub I doubt I could solve it in 5 hours. Though somehow didn't get hired, perhaps I guess I solved it too fast? /s"

"Believe me i'm a student here jn US. Recently interviewed for MSFT. They asked me exact question from PracHub. I saw it the night before and ignored it cause why waste time on random sites. I legit wanna go back and redo this whole thing if I had chance. Not saying will work for everyone but there is certainly some merit to that website. And i'm gonna use it in future prep from now on like lc tagged"

"10 years of experience but never worked at a top company. PracHub's senior-level questions helped me break into FAANG at 35. Age is just a number."

"I was skeptical about the 'real questions' claim, so I put it to the test. I searched for the exact question I got grilled on at my last Meta onsite... and it was right there. Word for word."

"Got a Google recruiter call on Monday, interview on Friday. Crammed PracHub for 4 days. Passed every round. This platform is a miracle worker."

"I've used LC, Glassdoor, and random Discords. Nothing comes close to the accuracy here. The questions are actually current — that's what got me. Felt like I had a cheat sheet during the interview."

"The solution quality is insane. It covers approach, edge cases, time complexity, follow-ups. Nothing else comes close."

"Legit the only resource you need. TC went from 180k -> 350k. Just memorize the top 50 for your target company and you're golden."

"PracHub Premium for one month cost me the price of two coffees a week. It landed me a $280K+ starting offer."

"Literally just signed a $600k offer. I only had 2 weeks to prep, so I focused entirely on the company-tagged lists here. If you're targeting L5+, don't overthink it."

"Coaches and bootcamp prep courses cost around $200-300 but PracHub Premium is actually less than a Netflix subscription. And it landed me a $178K offer."

"I honestly don't know how you guys gather so many real interview questions. It's almost scary. I walked into my Amazon loop and recognized 3 out of 4 problems from your database."

"Discovered PracHub 10 days before my interview. By day 5, I stopped being nervous. By interview day, I was actually excited to show what I knew."

"I recently cleared Uber interviews (strong hire in the design round) and all the questions were present in prachub."
"The search is what sold me. I typed in a really niche DP problem I got asked last year and it actually came up, full breakdown and everything. These guys are clearly updating it constantly."
Implement several string, tree, and BFS problems
You are given several independent coding tasks. Implement each as described. A) Print a root-to-target path with column indentation (binary tree) Give...
Build a Friend Recommender
You are given a simple social-graph codebase where each user has only an id and a collection of current friends. Starting from existing functions and ...
Solve Merge Lists and Vertical Traversal
Two coding tasks were mentioned for a 40-minute round: 1. Merge multiple sorted linked lists: You are given an array of k singly linked lists, where e...
Solve Three Algorithmic Problems
Three coding questions were mentioned: 1. Second-largest distinct permutation Given an array of integers that may contain duplicates, consider all ...
Solve array merge, tree view, and maze tasks
Solve the following coding tasks. 1) Merge two sorted arrays in-place You are given two integer arrays A and B, each sorted in non-decreasing order. -...
Sum numbers formed by root-to-leaf paths
You are given the root of a binary tree where each node contains a single digit from 0 to 9. Each root-to-leaf path represents a number obtained by co...
Compute Sliding Window Averages
Given a list of numbers nums and a positive integer window_size, compute the average of every contiguous subarray of length window_size. Return a list...
Implement power, reduce string, parse tree, debug maze
1) Implement fast exponentiation (pow) Implement a function pow(x, n) that returns \(x^n\). - Inputs: a floating-point base x and an integer exponent ...
Find shortest substring with N unique characters
You are given a string s and an integer n. Find the shortest contiguous substring of s that contains exactly n distinct characters. If there is no suc...
Find k most frequent elements, discuss O(n)
Find k most frequent elements, discuss O(n) Given an integer array nums of length n and an integer k (where 1 ≤ k ≤ the number of distinct values in n...
Write SQL for car rental utilization by city
SQL / Data Query Prompt (Car Rental) You are given four tables: user - user_id location - location_id - city car - car_id - car_size (e.g., compact, m...
Find two numbers summing to target without hashmap
Problem Given an integer array nums (length n) and an integer target, return the indices (i, j) such that: - i != j - nums[i] + nums[j] == target You ...
Solve four algorithmic problems
Solve the following coding tasks. For each, describe your approach, complexity, and handle edge cases. 1) Make parentheses string valid with minimal d...
Implement LRU cache and copy random list
Coding questions (two parts) Part A — Deep copy a linked list with random pointers You are given the head of a singly linked list where each node has:...
Implement list cloning and k-frequency finder
You are given two separate coding tasks. --- Problem 1: Deep copy a linked list with extra pointers You are given the head of a singly linked list. Ea...
Connect next pointers for each tree level
You are given the root of a binary tree where each node has fields left, right, and next (initially null). For every node, set its next pointer to the...
Count palindrome substrings in a string
Given a lowercase ASCII string s, count the number of substrings that are palindromes and return the count. Implement an O(n^ 2) solution using expand...
Implement merge-in-place and group cyclic-equivalent strings
You are given two ascending arrays to merge in place and a separate grouping task: Part A — In-place merge without known sizes: - Array A contains sor...
Validate a simplified numeric string
Implement isValidNumber (s) that returns true if and only if the ASCII string s represents a valid number under these simplified rules: - Optional lea...
Design structure for top-K frequent elements
You are working with a large collection of items represented by integer IDs (e.g., product IDs, user IDs, etc.). Updates and queries arrive over time....